## Measurement and Instrumentation Consider the following statement - 1. The compensating coil of a low power factor wattmeter compensates the effect of the impedance of the current coil. 2. The compensating coil of a low power factor wattmeter compensates the effect of the impedance of the voltage coil circuit.

Both 1 and 2 are true.
1 is true but 2 is false.
1 is false but 2 is true.
Both 1 and 2 are false.

## Measurement and Instrumentation Which of the following meters has a linear scale?

Moving coil meter
Hot wore meter
Moving iron meter
Thermocouple meter

1 MΩ/volt
1000 Ω/volt
10 MΩ/volt
100 Ω/volt

## Measurement and Instrumentation PMMC type instruments normally use

Eddy current damping
None of these
Air friction damping
Fluid friction damping

Moving coil type
Hot wire type
Induction type
Moving iron type

## Measurement and Instrumentation A resistance of 105 ohms is specified using significant figures as indicated below : 1. 105 ohms 2. 105.0 ohms 3. 0.000105 mega ohms Among these,

1 represents greater precision than 2 and 3.
1, 2 and 3 represent same precision.
2 represents greater precision but 1 and 3 represent same precision.
2 and 3 represent greater precision than 1.